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  2. Auto Scaling
  3. Developer Guide
  4. Common Operations
  5. Creating an AS Group

Creating an AS Group

Scenario

An AS group consists of a collection of instances that apply to the same scenario. It is the basis for enabling or disabling AS policies and performing scaling actions.

Precautions

  • If you use a token for authentication, you must call the IAM API to obtain the user's token and add X-Auth-Token to the request message header of ECS API you call.
  • The validity period of the token obtained from the IAM service is 24 hours. If you want to use a token for authentication, you can cache it to avoid frequently calling the IAM API.

Involved APIs

  • IAM API used to obtain the token
  • API used to query VPCs
  • API used to query subnets
  • API used to query security groups
  • API used to query AS configurations
  • API used to create an AS group

Procedure

  1. For details about token authentication, see Token Authentication.
  2. Send GET https://VPC endpoint/v1/{tenant_id}/vpcs to obtain VPCs. Use the ID of one of the obtained VPCs as parameter vpc_id for creating an AS group, such as a8327883-6b07-4497-9c61-68d03ee193. For the response parameters of the API used to query VPCs, see section Response Parameters for Querying VPCs.
  3. Send GET https://VPC endpoint /v1/{tenant_id}/security-groups to obtain security groups. Use one of the obtained security groups as parameter security_groups for creating an AS group. For the response parameters of the API used to query security groups, see section Response Parameters for Querying Security Groups.
  4. Send GET https://VPC endpoint /v1/{tenant_id}/subnets?vpc_id=a8327883-6b07-4497-9c61-68d03ee193a to obtain subnets in a specified VPC. For the response parameters of the API used to query subnets, see section Response Parameters for Querying Subnets.
  5. Send GET https://AS endpoint/autoscaling-api/v1/{tenant_id}/scaling_configuration to obtain AS configurations. Use the ID of one of the obtained AS configurations as parameter scaling_configuration_id for creating an AS group. For the response parameters of the API used to query AS configurations, see section Response Parameters for Querying AS Configurations.
  6. Send POST https://AS endpoint/autoscaling-api/v1/{tenant_id}/scaling_group to create an AS group. For detailed parameters, see section "Creating an AS Group" in the Auto Scaling API Reference.
    Specify the following parameters in the request body:
    {
        "scaling_group_name": "as-group-test",
        "scaling_configuration_id": "47683a91-93ee-462a-a7d7-484c006f4440", 
        "desire_instance_number": 0,
        "min_instance_number": 0,
        "max_instance_number": 10,
        "cool_down_time": 300,
        "health_periodic_audit_method": "NOVA_AUDIT",
        "health_periodic_audit_time": 5,
        "instance_terminate_policy": "OLD_CONFIG_OLD_INSTANCE",
        "vpc_id": "a8327883-6b07-4497-9c61-68d03ee193a",
        "networks": [
            {
                "id": "3cd35bca-5a10-416f-8994-f79169559870"
            }
        ],
        "security_groups": [
            {
                "id": "23b7b999-0a30-4b48-ae8f-ee201a88a6ab"
            }
        ]
    }

    scaling_group_id is returned if the request is successful.